#include "main.h"
void nhap(int a[][MAX], int n)
{
	for (int i = 0; i < n; i++)
	for (int j = 0; j < n; j++)
	{
		cout << "\tNhap Hang " << i + 1 << " Cot " << j + 1 << " = ";
		cin >> a[i][j];
	}
}